MineToolsminetools.cn · Minecraft Java Tools

UUID Converter

Convert between UUIDs and integer arrays, or calculate the UUID of an offline (cracked) Player.

UUID → Integer Array

[I;110787060,1156138790,-1514210135,238594805]

UUIDs in NBT (such as Owner, Leash, and Target) must use the integer array format.

Integer Array → UUID

For example: [I;1,2,3,4]

Offline Player UUID

Servers in offline mode (online-mode=false) use this UUID to save player data.
5627dd98-e6be-3c21-b8a8-e92344183641
[I;1445453208,-423740383,-1196889821,1142437441]

UUIDs for online-mode players are assigned by Mojang. Look them up using the official API; they can't be calculated from a player name.

Since 1.16, entity UUIDs are represented as an array of 4 integers (for example [I;1,2,3,4]), and this page can convert between this format and hyphenated UUIDs, as well as calculate UUIDs for players in offline mode.